Guard for sickle bars of mowing and harvesting machines



Oct. 5 1926. 1,601,826

c. G. GRIFFIN GUARD FOR SICKLE BARS OF MOWING AND HARVESTING MACHINES Filed Jan. 27, 1926 Zga' INVENTOR.

BY j ATTORN EYS.

' 40 a tongue 9 which fits into a recess 10. The having their inner ends shaped to fit said re- Patented Get. 5, 1925. i I 1,601,825

'Un1TEn STATES PATENT OFFICE.

CLARK G. GRIFFIN, or S1ARKS, OKLAHOMA.

GUARD FOR SICKLE BARS OF MOWING AI l'D HARVESTING MACHINES.

Application filed January 27, 1926. Serial. No. 84,033.

My invention relates to improvements in the free end of the bolt 17 and a nut 22, guards for sickle bars of mowing and harthreaded thereon, for tightening the bolt vesting machines and the like. and clamping the guard in its adjusted It is an object of the invention to provide position on the guard bar. An opening 23 5 a guard adjustably connected with the extends through the guard bar beneath the 60 guard bar, so the guards may be aligned end of the bolt, so that ready access may be to insure smoother operation of the sickle had to the nut for tightening the same. As bar, shown more clearly in Fig. 3, the sides and A further object of the invention is to base of the recess 1d are provided with provide a device of the above-mentioned transverse corrugations 24:, which firmly 65 character which is simple and durable in grip and hold the guard in its adjusted posiconstruction, reliable and efficient in use, tion upon tightening of the bolt 17. and inexpensive to manufacture. In operation, it is well known that the Other objects and advantages of the inguards are secured to the guard bar, at

vention will be apparent during the course spaced intervals, and to insure smooth oper- 70 of the following description. ation of the sickle bar the guards must be In the accompanying drawing, forming a in true alignment. A guard of my construcpart of this specification and in which like tion will permit vertical adjustment of the numerals are employed to designate like g SO h th y may be accurately parts throughout the same, alined and firmly supported in their ad- 75 Fig. 1, is a top plan view of my improved justed positions. Attention is also called guard to the fact that should any of the guards Fig. 2, is a bottom view of the same, become broken, they may be easily removed, Fig. 8, is a longitudinal sectional view of simply by loosening the bolt 17 and a new one substituted therefor. 30

the guard, and,

Fig. 4, is a perspective view of the ledger It is to be understood that the form of plat my invention herewith shown and described In the drawing, wherein for the purpose is to be taken as a preferred example of the of illustration I have shown a preferred emsame and that certain changes in the shape, bodiment of my invention, the numeral 5 Size and arrangement of the parts may be denotes the guard which is of conventional made without departing from the spirit of contour having the usual slot 6 to receive he invention or the scope of the subjoined tie cutters, not shown, and a transverse C a ms. groove 7 in which the sickle bar, not shown, Having thus described my invention, I reciprocates back and forth. The wear on claim: at 90 the guard caused by the movement of the 1. A device of the character described cutters and sickle bar is reduced by the comprising a guard bar having wedge ledger plate 8, the forward portion of which shaped recesses at spaced intervals in its extends into the slot 6 of the guard andhas forward edge, a plurality of guard fingers rear portion of the plate is depressed, as at cesses, a T-shaped groove in the inner end 11, and fits in the groove 7 being secured of the fingers, and a T-bolt adapted to fit therein by the rivet 12. 7 said groove and connect said fingers with The-rear end of the guard has its sides said bar.

slightly beveled inwardly as at 13 and is 2. A device of the character described adapted to fit the wedge-shaped recess 14- comprising a guard bar having wedge formed in the edge of the guard bar 15. A shaped recesses at spaced intervals in its longitudinal T-shaped groove 16 is formed forward edge, horizontal corrugations in the bottom of the guard adapted to re formed in the sides of said recesses, guard ceive the T-bolt 17 which extends through fingers having their inner ends shaped to fit the opening 18 passing through the guard said recesses, a T-shaped groove formed at bar. The opening 18 extends from the base the inner end of said fingers, and a T-bolt of the recess 14 to the shoulder 19 formed adapted to fit said groove and connect said by recessing the guardbar 15 along its rear fingers with said bar.

edge, as at 20, A washer 21 is fitted on 3. A device of the character described 110 comprising a guard bar having Wedge shaped recesses in its forward edge, guard fingers having their inner ends shaped to fit said recesses, an opening through said bar adjacent said recesses, a T-shaped groove formed in the inner end of said fingers, and a T-bo1t adapted to fit in said groove, said bolt extending through an aperture leading from said recess to said opening, and a nut threaded 011 said bolt for clamping the bolt to connect said fingers with said bar.

In testimony whereof I afiix my signa- CLARK G. GRIFFIN.

-ture. 

